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Old 11-26-2010, 11:17 PM
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sprintertech sprintertech is offline
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Join Date: Oct 2010
Location: NEW ORLEANS,LA.
Age: 41
Posts: 402
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Vehicle: 2010 RAM
Trim Level: BIG HORN
Color: AUSTIN TAN
Engine: 2009-2010 345ci (5.7L) Hemi V8 390hp 407lb/ft
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Quote:
Originally Posted by RamTech View Post
I also use M1 synthetic and the inside of my 3.7 is sludge free at 90k miles. I change it at every 5k along with the filter. Right now, I'm trying out the extended life formula that claims 15k between changes but I plan to change it at 10k. Around 5k, I'll pull a valve cover and check for any signs of trouble.
if mercedes likes it i like it.....but really.......had 120k on my last 4.7 without a single problem.....always ran mobil 1.....went over 10k miles on occasion....


my honest opinion is you could buy the cheapest oil on the market in the correct weight for your engine and change the oil every 3k and be fine.....
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